Fixes currently failing Piglit case
interface-blocks-name-reused-globally.vert
Signed-off-by: Tapani Pälli <tapani.pa...@intel.com>
---
src/glsl/ast_to_hir.cpp | 17 ++++++++++++++++-
1 file changed, 16 insertions(+), 1 deletion(-)
diff --git a/src/glsl/ast_to_hir.cpp b/src/glsl/ast_to_hir.cpp
index 811a955..13ddb00 100644
--- a/src/glsl/ast_to_hir.cpp
+++ b/src/glsl/ast_to_hir.cpp
@@ -5443,9 +5443,24 @@ ast_interface_block::hir(exec_list *instructions,
state->struct_specifier_depth--;
- if (!redeclaring_per_vertex)
+ if (!redeclaring_per_vertex) {
+ ir_variable *var;
validate_identifier(this->block_name, loc, state);
+ /* From section 4.3.9 ("Interface Blocks") of the GLSL 4.50 spec:
+ *
+ * "Block names have no other use within a shader beyond interface
+ * matching; it is a compile-time error to use a block name at global
+ * scope for anything other than as a block name."
+ */
+ var = state->symbols->get_variable(this->block_name);
+ if (var && !var->type->is_interface()) {
+ _mesa_glsl_error(&loc, state, "Block name `%s' is "
+ "already used in the scope.",
+ this->block_name);
+ }
+ }
+
const glsl_type *earlier_per_vertex = NULL;
if (redeclaring_per_vertex) {
/* Find the previous declaration of gl_PerVertex. If we're redeclaring
--
2.1.0
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